I’ve included both my simple
SONAR program and the Makefile
in a zip file you can find at
www.servomagazine.com under
Mr. Roboto as RobotoNXC.zip.

Final Notes

We’ve just touched the surface of
what you can do with NXC. For
instance, there is a way to program
and “talk” to the NXT brick via
Bluetooth. If there’s enough interest, I
can do an article on that. There are
also other tools that are more
graphically oriented for the Mac that
present some of the functionality that
Windows users get with Bricx
Command Center. You can find them
at: http://bricxcc.sourceforge.net/
utilities.html. I haven’t investigated
these yet, but it looks like there’s a lot to play with (see
Figure 6).

Thanks again to those selfless individuals that toil away
on open source. Those of us who aren’t as adept definitely
reap the benefits of your largesse!

Figure 6. More tools (toys) for Mac NXT programmers.

That wraps up another Mr. Roboto column. As usual, if
you have any robotics questions that you would like me to
help you figure out, don’t hesitate to drop me an email at
roboto@servomagazine.com. I’ll be happy to work on it!
Until next time, keep on building those robots! SV

STEER WINNING ROBOTS
WITHOUT SERVOS!

Perform proportional speed, direction, and steering with only two Radio/Control channels for vehicles using two
separate brush-type electric motors mounted right and left
with our mixing RDFR dual speed control. Used in many
successful competitive robots. Single joystick operation: up
goes straight ahead, down is reverse. Pure right or left twirls
vehicle as motors turn opposite directions. In between stick
positions completely proportional. Plugs in like a servo to
your Futaba, JR, Hitec, or similar radio. Compatible with gyro
steering stabilization. Various volt and amp sizes available.
The RDFR47E 55V 75A per motor unit pictured above.
www.vantec.com